EP2812253A1 - Apparatus for heat shrinking a package and method for heat shrinking a package - Google Patents
Apparatus for heat shrinking a package and method for heat shrinking a packageInfo
- Publication number
- EP2812253A1 EP2812253A1 EP13704747.8A EP13704747A EP2812253A1 EP 2812253 A1 EP2812253 A1 EP 2812253A1 EP 13704747 A EP13704747 A EP 13704747A EP 2812253 A1 EP2812253 A1 EP 2812253A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- heat
- liquid
- preheat container
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 12
- 239000007788 liquid Substances 0.000 claims abstract description 161
- 239000012530 fluid Substances 0.000 claims abstract description 108
- 238000010438 heat treatment Methods 0.000 claims abstract description 104
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 230000005484 gravity Effects 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 10
- 238000000638 solvent extraction Methods 0.000 description 19
- 239000007921 spray Substances 0.000 description 8
- 238000012546 transfer Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 235000021270 cold food Nutrition 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002654 heat shrinkable material Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
- B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
- B65B53/04—Shrinking wrappers, containers, or container covers during or after packaging by heat supplied by liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0014—Recuperative heat exchangers the heat being recuperated from waste air or from vapors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
- B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
- B65B53/06—Shrinking wrappers, containers, or container covers during or after packaging by heat supplied by gases, e.g. hot-air jets
- B65B53/063—Tunnels
Definitions
- An apparatus for heat shrinking a package may be used to heat shrink a package. This process may be performed in the context of packaging foods such as meat and cheese.
- the food can be packaged in a heat shrinkable material.
- the material is shrunk around the food in the apparatus, which may be called a shrink tunnel or shrink tank.
- the purpose of the shrinking is to properly seal the package and to improve its appearance.
- Such an apparatus may involve hot air being applied to the package, causing the material to shrink around the food.
- a problem with this method is that when packaging cold food products, shrinking stops once the material contacts the cold food. Such incomplete shrinking processes can result in a package which may not be sealed properly and/or which is aesthetically displeasing.
- the package is subjected to immersion in a water bath or passage through a water curtain.
- the application of water can at least partly overcome the problem of the material stopping shrinking when coming into contact with a cold food product.
- immersion in water requires a large amount of energy, particularly in the initial stages of using the apparatus when the water must be heated to a high temperature (the water must also be subsequently maintained at a high temperature).
- US 5,400,570 discloses a method of heat shrinking a package in which both hot air and hot water are applied to the package.
- the hot air which is at a higher temperature than the hot water, is used to heat the water.
- US 2009/0071107 Al discloses a system in which steam is extracted from the apparatus so as to re-circulate its heat.
- such apparatuses require a relatively large amount of energy, particularly during the start-up phase of use of the apparatus.
- An aim of the present invention is to provide an apparatus for heat shrinking a package. Another aim is to provide a method for heat shrinking a package.
- an apparatus for heat shrinking a package comprising: a chamber configured such that a package on a surface of the apparatus may be heat shrunk via a heating fluid in the chamber; and a preheat container configured to supply a preheated liquid to a heat tank from which the heating fluid is supplied to the chamber; wherein the preheat container is above the surface such that liquid in the preheat container can be preheated by heat from the chamber.
- the present invention provides an apparatus for heat shrinking a package in an energy efficient way.
- liquid can be preheated in the preheat container before entering the heat tank. This allows the temperature of the heat tank to be maintained at the necessary temperature using less energy, while still providing the required amount of additional liquid to the system to replace the used heating fluid.
- liquid in the preheat container can be preheated by heat from the chamber. This reuses heat from the system that would otherwise be wasted.
- the preheat container is close to the heat source in the chamber such that the liquid in the preheat container can be heated in an energy efficient way.
- the preheat container is above the chamber.
- the heat in the chamber can be used to preheat liquid in the preheat container.
- the heat in the chamber rises upwards towards the preheat container so as to preheat the liquid in the preheat container. This provides a simple system for reusing the energy in the chamber.
- the apparatus comprises at least one channel configured to produce a water curtain inside the chamber, wherein the preheat container is above the at least one channel.
- one or more partitioning curtains can be used to insulate the chamber from the colder outside environment.
- one or more fluid (i.e. water) curtains can be used to apply heating fluid to the package in order to heat shrink it.
- the fluid level in the heat tank can be monitored. This allows simple detection of the fluid requirements of the apparatus. Any variation in the fluid consumption rate of the apparatus can be quickly detected.
- the apparatus comprises a container level monitor configured to monitor a level of liquid in the preheat container.
- the apparatus can respond quickly to any variation in the fluid levels within the system. This can be used to ensure that a consistent volume of fluid is within circulation in the apparatus during operation.
- the preheat container comprises an opening through which the preheated liquid can overflow towards the heat tank.
- the preheat container may have a simple design which allows the preheated liquid to be transferred to the heat tank in a simple manner.
- the use of the overflow opening can reduce the possibility that the volume of liquid in the preheat container exceeds a threshold value.
- the supply of cold external liquid to the preheat container can have the effect of condensating vapour heating fluid inside the chamber.
- This can transform vapour heating fluid inside the chamber into heated liquid heating fluid, which can be re-circulated in the system.
- the apparatus 1 By positioning the preheat container 20 above the surface 11 on which the package 2 is positioned, in use, the apparatus 1 provides a simple way of re-circulating energy in the system. Excess heat energy in the chamber 10 is used directly to heat liquid in the preheat container 20, the preheated liquid 21 then being supplied to the heat tank 30 (e.g. by over flowing from the container 20 and moving under gravity to the heat tank 30 as illustrated in dashed lines 16) for supply back into the chamber 10 for the heat shrinking process.
- the heat tank 30 e.g. by over flowing from the container 20 and moving under gravity to the heat tank 30 as illustrated in dashed lines 16
- the inventors have found that provision of the preheat container 20 above the surface 11 results in a reduction in energy consumption of the apparatus 1 of at least 15%, preferably of at least 20% or more, for example of about 23% (e.g. from 32.5kW/h to 25kW/h).
- the preheat container 20 is not directly above the surface 11. This means that in plan view there is no overlap between the preheat container 20 and the surface 11.
- the preheat container 20 is above the chamber 10. In this case, substantially all of the excess heat in the chamber 10 can rise upwards towards the preheat container 20 so as to preheat liquid inside the preheat container 20. Excess heat in the chamber 20 may be in the form of vapour heating fluid such as water vapour, for example. Such vapour heating fluid is not as effective as liquid heating fluid 31 for heat shrinking the package 2. In the present invention, the vapour heating fluid can be used by re-circulating its energy in the system.
- the preheat container 20 is inside the chamber 10. In this case, energy loss during transfer from the chamber 10 to the preheat container 20 may be least reduced and possibly eradicated. The excess heat in the chamber 10 can help to maintain the temperature of the preheated liquid 21 in the preheat container 20.
- the preheat container 10 may absorb heat from the chamber 10 on all sides of the preheat container 20.
- heat can also be received through the top surface and/or one or more side surfaces of the preheat container 20.
- the apparatus 1 comprises at least two partitioning curtains 14e, 14d inside the chamber 10 through which the package 2 passes when the package 2 is transported into the chamber 10, and at least two partitioning curtains 14b, 14c inside the chamber 10 through which the package 2 passes when the package 2 is transported out from the chamber 10. Both the entrance and exit of the chamber 10 may comprise further partitioning curtains 14f, 14a to provide insulation from the external environment.
- the apparatus 1 comprises at least three partitioning curtains 14f, 14e, 14d on an inlet side and/or at least three partitioning curtains 14c, 14b, 14a on an outlet side of the chamber 10. This produces double or triple curtains on both sides of the chamber 10. This reduces the quantity of vapour heating fluid which can move from the interior of the chamber 10 to the exterior of the chamber 10.
- the preheat container 20 is above the at least one channel.
- An advantage of this is that heat from the channel can rise upwards towards the preheat container 20 so as to preheat liquid in the preheat container 20. Accordingly, heat energy that would otherwise be wasted can be re-circulated in the system.
- the liquid that flows through the channels to form the water curtains 12 comprises liquid heating fluid 31.
- the liquid that forms the water curtains 12 is heated such that the water curtains 12 do not cause the temperature inside the chamber 10 to be reduced. Instead the water curtains 12 help to maintain the temperature inside the chamber 10.
- vapour heating fluid can be formed and can rise upwards. This can in principle result in the heat from the vapour heating fluid being lost from the system.
- the vapour heating fluid comes into contact with the preheat container 20 so as to transfer heat to the preheat container 20. In this way the heat from the vapour heating fluid is re-circulated and retained in the system.
- heating fluid 31 is consumed.
- heating fluid may remain on the package 2 when the package 2 exits from the apparatus 1.
- heating fluid may be lost as vapour heating fluid that escapes through the sides (as illustrated by the solid arrow pointing upwards on the outside of the partitioning curtains 14a and 14f) and/or out from the top of the chamber 10 of the apparatus 1.
- the rate of consumption of heating fluid in use to heat shrink products 2 may be in the range of from about 60 1/h to about 180 1/h, for example.
- the heat tank 30 can comprise fewer heating units than corresponding apparatuses 1 that do not have the preheat container 20 system.
- excess heating fluid 31 within the chamber 10 can flow downwards into the heat tank 30 under gravity.
- heating fluid 31 that has been used by a water curtain 12 can flow back into the heat tank 30 efficiently. This helps to reduce the amount of heat that is lost from the heating fluid 31 between the time that it is used in the chamber 10, e.g. in a water curtain 12 and the time that it is received into the heating tank 30. Otherwise, excess vapour heating fluid can be given off by the liquid heating fluid 31 in the chamber 10, which can be lost in the system.
- the present invention provides a way of minimising this lost heat by using the vapour heating fluid inside the chamber 10 to preheat liquid inside the preheat container 20.
- the container level monitor allows the volume of liquid in the preheat container 20 to be monitored. This allows any undesirable variations in the volume of liquid inside the preheat container 20 to be detected quickly.
- the container level monitor 23 can detect when the volume of liquid undesirably increases, which may be indicative of a blockage preventing the preheated liquid 21 from transferring from the preheat container 20 to the heat tank 30.
- the container level monitor can detect if the volume of liquid undesirably decreases, which may be indicative of a defect in the preheat container 20 allowing extra preheated liquid 21 to exit the preheat container 20.
- the controller 40 is configured to raise an alarm signal when the level of liquid in the preheat container 20 falls below a predetermined threshold or rises above a predetermined threshold.
- a container level monitor configured to monitor the level of liquid in the preheat container 20 may not be necessary. As any excess liquid in the preheat container 20 is allowed to overflow, the total amount of liquid in the system can be determined by sensor 33.
- the controller 40 is configured to control a supply of an external liquid to the preheat container 20 based on monitoring by the tank level monitor 33 and/or a container level monitor. For example, the controller 40 can control the apparatus 1 such that the level of heating fluid 31 in the heat tank 30 is maintained at an approximately constant level when the apparatus 1 is in production mode.
- the controller 40 may be configured to maintain the level of heating fluid 31 inside the heat tank 30 at a target threshold level.
- the rate of supply of external liquid to the preheat container 20 may be directly related to the rate at which preheated liquid 21 is supplied from the preheat container 20 to the heat tank 30. In this way, the level of heating fluid 31 in the heat tank 30 can be maintained at an approximately constant level.
- the apparatus 1 comprises an extractor 60 configured to extract vapour heating fluid from the chamber 10.
- the extractor 60 is configured to discharge the extracted vapour heating fluid to an environment external to the apparatus 1.
- the apparatus 1 forms a part of a packaging system 100.
- the packaging system 100 may comprise a dryer (not illustrated) configured to dry packages 2 that have been heat shrunk by the apparatus 1 for heat shrinking packages 2.
- the dryer is configured to blow gas onto the package 2 so as to dry the package 2.
- the gas may be air, for example.
- the gas may be heated.
- the dryer can dry packages 2 that have heating fluid 31 remaining on them from the apparatus 1.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cookers (AREA)
- General Preparation And Processing Of Foods (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Vacuum Packaging (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Closing Of Containers (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13704747.8A EP2812253B1 (en) | 2012-02-07 | 2013-02-06 | Apparatus for heat shrinking a package and method for heat shrinking a package |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12154247.6A EP2626308A1 (en) | 2012-02-07 | 2012-02-07 | Apparatus for heat shrinking a package and method for heat shrinking a package |
PCT/EP2013/052260 WO2013117556A1 (en) | 2012-02-07 | 2013-02-06 | Apparatus for heat shrinking a package and method for heat shrinking a package |
EP13704747.8A EP2812253B1 (en) | 2012-02-07 | 2013-02-06 | Apparatus for heat shrinking a package and method for heat shrinking a package |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2812253A1 true EP2812253A1 (en) | 2014-12-17 |
EP2812253B1 EP2812253B1 (en) | 2016-10-05 |
Family
ID=47722244
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12154247.6A Withdrawn EP2626308A1 (en) | 2012-02-07 | 2012-02-07 | Apparatus for heat shrinking a package and method for heat shrinking a package |
EP13704747.8A Active EP2812253B1 (en) | 2012-02-07 | 2013-02-06 | Apparatus for heat shrinking a package and method for heat shrinking a package |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12154247.6A Withdrawn EP2626308A1 (en) | 2012-02-07 | 2012-02-07 | Apparatus for heat shrinking a package and method for heat shrinking a package |
Country Status (8)
Country | Link |
---|---|
US (1) | US10597183B2 (en) |
EP (2) | EP2626308A1 (en) |
AU (1) | AU2013218107B8 (en) |
BR (1) | BR112014019294B8 (en) |
ES (1) | ES2609472T3 (en) |
NZ (1) | NZ627853A (en) |
RU (1) | RU2620637C2 (en) |
WO (1) | WO2013117556A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI655136B (en) * | 2014-06-27 | 2019-04-01 | 日商養樂多本社股份有限公司 | Shrinking label heat shrinking device |
DE102015206359A1 (en) | 2015-04-09 | 2016-10-13 | Krones Ag | Device for overpressure stabilization of filled and closed PET containers and method for overpressure stabilization of filled PET containers |
WO2018115246A1 (en) * | 2016-12-21 | 2018-06-28 | Cryovac, Inc. | Apparatus for heat shrinking a package and method for heat shrinking a package |
US20190031382A1 (en) * | 2017-07-26 | 2019-01-31 | Alain Cerf | Cooling Holes for Film Wrapped Articles |
US11548673B2 (en) * | 2018-06-27 | 2023-01-10 | Kenneth Anthony Loritz | Steam shrink wrap sleeve with printed label for container and associated method |
US11603227B2 (en) * | 2020-11-18 | 2023-03-14 | Kenneth Anthony Loritz | Steam shrink wrap sleeve with printed label for container and associated method |
DE102022211555A1 (en) | 2022-11-01 | 2024-05-02 | Beiersdorf Aktiengesellschaft | Method for wrapping containers with shrink film or shrink tubing and device therefor |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1353157A (en) * | 1970-11-04 | 1974-05-15 | Grace W R & Co | Packaging apparatus and method |
US3872644A (en) * | 1973-06-22 | 1975-03-25 | Grace W R & Co | Apparatus for packaging random-sized articles |
US3978874A (en) * | 1975-06-23 | 1976-09-07 | Schmidt Sr Jacob | Heat sensitive film shrinking machine |
SU1742145A1 (en) * | 1989-12-26 | 1992-06-23 | Опытно-Конструкторское Технологическое Бюро Расфасовочного И Упаковочного Оборудования | Thermosetting tunnel |
US5193290A (en) * | 1992-09-14 | 1993-03-16 | Ossid Corporation | Apparatus and method for sequential shrinking of packaging film |
US5400570A (en) | 1993-05-17 | 1995-03-28 | Bennett; Charles J. | Method and apparatus for heat shrinking film around a product |
US5699650A (en) * | 1996-06-10 | 1997-12-23 | W. R. Grace & Co.-Conn. | Dual temperature hot water shrink system |
EP1871673B2 (en) | 2005-04-19 | 2014-08-13 | Multivac Sepp Haggenmüller GmbH & Co. KG | Device for shrinking packagings |
DE102006018330A1 (en) * | 2005-04-19 | 2006-10-26 | Multivac Sepp Haggenmüller Gmbh & Co. Kg | Shrinking machine for shrink-packaging film comprises bath of hot water which provides heat for shrinking, packages passing over this on conveyor and waste steam flowing through return pipe back into bath |
-
2012
- 2012-02-07 EP EP12154247.6A patent/EP2626308A1/en not_active Withdrawn
-
2013
- 2013-02-06 RU RU2014132588A patent/RU2620637C2/en active
- 2013-02-06 US US14/376,159 patent/US10597183B2/en active Active
- 2013-02-06 WO PCT/EP2013/052260 patent/WO2013117556A1/en active Application Filing
- 2013-02-06 EP EP13704747.8A patent/EP2812253B1/en active Active
- 2013-02-06 AU AU2013218107A patent/AU2013218107B8/en active Active
- 2013-02-06 ES ES13704747.8T patent/ES2609472T3/en active Active
- 2013-02-06 BR BR112014019294A patent/BR112014019294B8/en active IP Right Grant
- 2013-02-06 NZ NZ627853A patent/NZ627853A/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2013117556A1 * |
Also Published As
Publication number | Publication date |
---|---|
BR112014019294B8 (en) | 2022-10-04 |
NZ627853A (en) | 2015-07-31 |
AU2013218107A1 (en) | 2014-08-21 |
US10597183B2 (en) | 2020-03-24 |
ES2609472T3 (en) | 2017-04-20 |
BR112014019294B1 (en) | 2021-01-19 |
EP2812253B1 (en) | 2016-10-05 |
RU2620637C2 (en) | 2017-05-29 |
AU2013218107B2 (en) | 2017-03-30 |
EP2626308A1 (en) | 2013-08-14 |
RU2014132588A (en) | 2016-04-10 |
AU2013218107B8 (en) | 2017-04-13 |
AU2013218107A8 (en) | 2017-04-13 |
US20150040520A1 (en) | 2015-02-12 |
BR112014019294A2 (en) | 2017-06-20 |
WO2013117556A1 (en) | 2013-08-15 |
BR112014019294A8 (en) | 2017-07-11 |
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